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Date:	Mon, 20 Jan 2014 18:27:58 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: socat with IP6 support?
Message-ID:	<20140120172758.GA2357@calimero.vinschen.de>
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On Jan 20 03:45, Andrew Schulman wrote:
> > Thanks.  I added the ip6.h header nevertheless for the upcoming
> > Cygwin 1.7.28.
>=20
> This seems to work fine for socat, but for socat-debuginfo 2.0.0-b6, the
> build fails because IPV6_DSTOPTS is undefined.

I don't quite understand this.  socat-debuginfo is just a by-product of
building socat.  How can building socat work but building debuginfo fail?!?

> Cygwin doesn't seem to
> define IPV6_DSTOPTS.  In Ubuntu, it's defined in
> /usr/include/linux/in6.h (value 59), along with a whole bunch of other
> IPv6 socket options.
>=20
> I'm not sure what the best solution is here.  I could define it locally,
> but would it be better for Cygwin to bring in the missing definitions?

I don't think so.  I checked the available options on Windows again,
and IPV6_DSTOPTS is not supported.  I applied a small patch a few
minutes ago to add a few socket options our headers were missing,
but there are still a lot of Linux socket options not supported on
Windows which hinders CYgwin to support them.

Any chance you could tweak this piece of code to be built only
if IPV6_DSTOPTS is defined?


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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